Swagging slugs

Everyone makes slugs, and I do :) My prototype, made from what I found in the garage, from waste, but it works :)

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Left slug is JSB KO, right my 18grain slug. 

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18grain, same weight, different length, the length of the slugs can be adjusted by changing the HP forming pin.

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Plasticine expansion test, 18grain v0 285m/s
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At the moment, I use JSB jumbo heavy pellets as a material, it is the most convenient for me.


 
Those look very nice! If you don't mind my asking, what do you source for your raw material? 

I had a friend who would sit at the end of his garage for hundreds of hours casting bullets to sell at the gun shows. This was in the early 80s and I can remember back then him trying to find lead sources. He got all he could from the tire shops, but that has gotten really competitive. I can't imagine how much lead he inhaled over the years.
 
I'm certainly not going to minimize what you've done. Because not anyone can make their own slug swagging die with a metal lathe. But here's the REAL question....... What is the accuracy? Have you tested them yet? Also, this could be the beginning or something really cool if you're willing to invest the time an take orders. Like, say someone wanted you to make them a swagging die in .254 or .221. You could make custom dies and sell them at a premium. Just a thought. But I'm really interested in the accuracy of those slugs. 
 
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I'm certainly not going to minimize what you've done. Because not anyone can make their own slug swagging die with a metal lathe. But here's the REAL question....... What is the accuracy? Have you tested them yet? Also, this could be the beginning or something really cool if you're willing to invest the time an take orders. Like, say someone wanted you to make them a swagging die in .254 or .221. You could make custom dies and sell them at a premium. Just a thought. But I'm really interested in the accuracy of those slugs.

At the beginning, as soon as I did the first slugs, I checked it right away, nothing special, but also without any tragedy. Now I'm working on improving the alignment of all moving parts (hp forming pin, spindle forming the back of the slugs) I'm also looking for materials that will last longer than the waste from which I made the prototype, I'm learning all the time, maybe something will come out of it, maybe not, it's important that this is what I have fun and get to know my lathe.

It is also important that I can make another dies, in different calibers, shapes, it was not just a coincidence :)
 
So you're currently using mild steel? Are you looking for some tools steel (say W2), or something like 1080 that can be hardened, tempered, and machined?



The slug formatting part is made of hardened steel (3 hours of polishing per mirror), the housing is made of stainless steel because I had a piece in the garage.

Exactly as you write, now I'm going to do it in nc6, it is hardened easily at home (810 degrees) and is not very susceptible to deformation after hardening. But as I mentioned before, I don't know anything about it, I'm just getting into it.